FAILED: patch "[PATCH] SUNRPC: Prevent immediate close+reconnect" failed to apply to 5.15-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 3be232f11a3cc9b0ef0795e39fa11bdb8e422a06 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Tue, 26 Oct 2021 18:01:07 -0400
Subject: [PATCH] SUNRPC: Prevent immediate close+reconnect

If we have already set up the socket and are waiting for it to connect,
then don't immediately close and retry.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 691fe5a682b6..a02de2bddb28 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -767,7 +767,8 @@ EXPORT_SYMBOL_GPL(xprt_disconnect_done);
  */
 static void xprt_schedule_autoclose_locked(struct rpc_xprt *xprt)
 {
-	set_bit(XPRT_CLOSE_WAIT, &xprt->state);
+	if (test_and_set_bit(XPRT_CLOSE_WAIT, &xprt->state))
+		return;
 	if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
 		queue_work(xprtiod_workqueue, &xprt->task_cleanup);
 	else if (xprt->snd_task && !test_bit(XPRT_SND_IS_COOKIE, &xprt->state))
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 7fb302e202bc..ae48c9c84ee1 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2314,7 +2314,7 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
 
 	WARN_ON_ONCE(!xprt_lock_connect(xprt, task, transport));
 
-	if (transport->sock != NULL) {
+	if (transport->sock != NULL && !xprt_connecting(xprt)) {
 		dprintk("RPC:       xs_connect delayed xprt %p for %lu "
 				"seconds\n",
 				xprt, xprt->reestablish_timeout / HZ);